Ebola Survivor Nancy Writebol Recalls Dark Days With Deadly Disease

"I wondered at times whether I would live or die," Writebol said.

"My job ... was to make sure that doctors were suited up properly in their personal protective gear," Writebol told ABC News, describing how she would also "decontaminate" the doctors as they left the isolation unit. "I was the mama bear."

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"I had had malaria once in this past year, and so I knew what that felt like. And it was just the same symptoms," she said. But doctors tested her for Ebola "just to set everybody's mind at ease," she said, and the test came back positive.

Her husband, David, had to deliver the news.

"How do you tell the love of your life that they've contracted a deadly disease?" he said, adding that telling the couple's two sons was "equally difficult."

Writebol was swiftly isolated and visited by doctors wearing the same protective suits she once helped them put on. She was also given ZMapp, an experimental Ebola drug that had only been tested in monkeys.

She was evacuated by plane on Aug. 4 to Emory University Hospital in Atlanta, where she spent two weeks in isolation.

"It's a really lonely place to be," Nancy Writebol said. "When you're not able to be with people that you love, to be able to touch your husband, or to be able to reach out to your children even."

"Part of the hellishness of this disease is to be isolated and completely cut off from that contact with ones that you love," said David Writebol, who was also placed in isolation just in case he had contracted the virus.

"I wondered at times whether I would live or die," Nancy Writebol said, explaining how she turned to God for strength. "His presence really was with me -- and I knew that, I could sense it. ... I am so thankful for His mercy and His grace."

But she also credits the experimental drug ZMapp, though doctors have noted that there’s no way to know for sure whether it helped or hindered her recovery.

"I think it was the booster," she said. "But I also believe that the supportive care was just as important as the serum."

Dr. Kent Brantly, another American Ebola survivor, also received the drug. Brantly worked for Samaritan's Purse, a different missionary group.

Writebol said her thoughts are with a third American Ebola patient, Dr. Rick Sacra, who contracted the virus while working in a maternity ward.

"We just continue to pray for God's mercy," she said.

Despite having walked through "the valley of the shadow of death," Writebol said she's not ruling out a trip back to Liberia.

"We'll see," she said. "We continue to pray for our friends in Liberia and ask God to be merciful in that situation and to give them all that they need."

"We pray that this Ebola contagion would be contained, and would be stopped," she said.

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